Elevator-gearing



C. ESPLIN.

Patented Sept. 9, 1884.

(No Model.)

BLEVATOR GrEIARING.V

NTI: llll' Y JM mi@ we lUNiTnn STATES BaTnNT @lirica onnnnnsnsrmn, or Minnnnroms, MINNESOTA.

" ELEVATOR-GEARENG.

SPECIFICATION forming part of Letters Patent No. S04-,810, dated September 9, 18,8%.

' Application tiled July 14, 1884. (No model.)

also had to the accompanying drawings, in

whichv Figure l is a sectional elevation of an elevator, showing my improvements arranged therein. Fig. 2 represents a side view of the gearing, detached.

A represents the lower or bin-supporting frame, A2 the bins, and A3 the roof-frame, all

arranged in the ordinary manner.

a represents the main driving-shaft, mounted in suitable bearings on the lower frame, A', and adapted to be driven in any suitable manner.

a2 is a short elevator-head shaft, parallel with the shaft a, and supported upon suitable bearings across the roof-frame A3, and adapted to be driven by a belt, b, from apulley, c', on the shaft a to a pulley, c2, on the shaft a2, as shown. d is the elevator-belt, armed with the ordinary buckets, d2, and running over the outside of the belt b and pulley c2, the head-pulley c2 thus supporting the two belts, one ruiming over and in contact 'with the other. Thelower end of the 'belt d runs over the usual bootpulley, d3, in a boot-hopper, d4. The belt b is loose enough so that it will require atightener, e', to connect it with the shaft c. The tightener may be operated by a rack and pinion, screw, or any other suitable means; but for the purpose of illustration I have shown a simple lever, e2, and connecting-rod e3 to operate it. y

e4 is a small pulley, connected by a pivoted lever, e5, and rods e e7 to the lever e2, so that when the tightener e is drawn backward away from the belt b the pulley e4 will be pushed outward to throw the belt b away from the opposite side of the pulley c', so that it will not come in contact therewith and be worn by the friction of the constantly-revolving pulley.

A simple bar or other mechanical device may be substituted for the pulley e, if preferred. The size ofthe pulley c is immaterial, as the back side of the belt d may hang out of the perpendicular. The front side of the belt d', on the contrary, is usually hung and run in a direct line from one pulley to the other. Thus the rear line of the belt d may be run out away from a direct line far enough to increase the size of the pulley c', as mayberequired. The action of the pulley e4 prevents any interference or friction of the parts when the elevator is not running. By this simple arrangement of the shafting and belts I gain many important advantages. I dispense with a large amount of extra lines of shafting and ponderous machinery above the bins of the elevator, thereby avoiding the necessity of frequently readjusting the shafting causedby the settling and rising of the frame when the elevator 1s lled and emptied.

Each set of elevators or legs may be operated from below, where the operator can see just what is needed, thus saving much valuable time and a great reduction of power, and consequent saving of fuel, as the elevators need only be run when actually required.

' rIhe iilling of the bins with grain causes the bins A2 and roof-frame A3 to settle to a certain extent, and then when the bins are emptied the frame and bins rise again, thus constantly changing the relative positions of the different parts of the frame, and causing the shafting to get out of line and require frequent readjustment. By my arrangement this readjustment is avoided, as only the short elevator-head shaft a2 is placed on the frame A3, and the rising and falling of the latter will not affect it further than a loosening or tightening of the belts slightly, but not to an extent greater than the tightener. e can take up.

This driving-gear occupies no room in the building that could be utilized for any other purpose; hence no extra room is required for the system.

I do notwish to conne myself to the mechanism shown for operating the tightener, Src.,

as I am aware that many different means may be used for that purpose.

Any other suitable meansthan the tightener IOO e may be used to eomleet the shafts a :md a2, if preferred.

This system may also be used in operating Wire rope or ehan beltng by slight modifientons.

Having described my invention and set forth its merits, Whitt I claim isl. The belt cl', in eombnaton with the driving-belt b and tightener e', placed inside of the said belt d, substantially as set forth.

2. The combination of the mein shaft a', earlyug the pulley c', elevator-head shaft a2, earryng the pulley c2, boot-pulley d, bucket-belt' d, drvngbelt Z), and tightener e, substtu tally as set forth.

3; The Combination of the mein shaft a, earrying the pulley c, elevator-head shaft co2, earrying the elevatouhead pulley c2, boot-pulley cl3, bucket-belt d', mein driving-belt b, tightener e', shifter-pulley et, and means, substantally as described, whereby the looseningof sind tightener-pulley will cause seid shifterpulley to throw seid mein driving-belt loose from seid main driving-pulley.

In testimony whereof I havehereunto set my hand n presence of two subselibing Witnesses.

CHARLES` ESPLIN.

Witnesses:

LoUIs FEEsuR, Sr., l LoUls Fuusu, J r. 

